Senior Backend Engineer

Senior Software Engineer - Node.js Confidential Client * Remote (UK) * Full-time About the Client This role sits with a well-established product engineering organisation headquartered in Northern Ireland, with a reputation built on delivering composable, cloud-native digital commerce platforms for some of the world's best-known retail and consumer brands. Their engineering teams work across the full stack but with a particular focus on API-first, MACH-architecture systems - combining best-in-class headless commerce technology with strong Node.js and TypeScript engineering at the backend. They partner closely with their technology vendors and work on complex, multi-market platforms where engineering quality and system reliability genuinely matter. More detail on the client will be shared at interview stage. The Role This is a backend-focused senior engineering role. You will be working within a product engineering team building and maintaining the server-side systems that power high-traffic digital commerce experiences - APIs, integrations, data pipelines, and the backend logic that sits behind omnichannel customer journeys. You will be expected to take ownership of meaningful parts of the codebase, contribute to architectural decisions, and bring a level of craft and rigour to your work that raises the standard around you. This is not a maintenance role - the team is actively building and scaling. What You'll Work On Designing and building scalable Node.js backend services and APIs in a cloud-native, microservices environmentIntegrating with headless commerce platforms, content systems, and third-party data providers via REST and GraphQL APIsBuilding and maintaining event-driven pipelines that support real-time commerce operations across multiple marketsWorking closely with frontend, architecture, and DevOps teams to deliver end-to-end featuresContributing to technical design, code review, and engineering standards within the teamSupporting cloud infrastructure decisions on AWS, Azure, or GCP as they relate to backend servicesWhat We're Looking For Strong, production-grade Node.js engineering - you write clean, testable, well-structured TypeScriptSolid experience building and consuming RESTful and GraphQL APIs at scaleFamiliarity with microservices architecture and event-driven system designExperience with relational and/or NoSQL databases - PostgreSQL, MongoDB, Redis, or similarComfortable working in a CI/CD environment with a strong DevOps cultureCloud experience on at least one major provider - AWS, Azure, or GCPA collaborative, ownership-oriented mindset - you see things through and communicate wellNice to Have Experience in the digital commerce or retail technology spaceFamiliarity with MACH architecture principles and composable commerce platformsExposure to headless CMS or commerce tooling - Contentful, Commercetools, Algolia, or similarExperience working within an agency or consultancy environment alongside client engineering teamsJava or Python experience alongside Node.jsWhat's on Offer Fully remote role, open to candidates anywhere in the UKCompetitive salary commensurate with senior-level experienceWork on high-profile, technically challenging digital commerce platformsA collaborative engineering culture with genuine focus on quality and craftInvolvement in architectural decision-making from day one